Carriage or movable bed for forming and planing machines



. UNITED STATES PATENT OFFICE.

EDWIN ALLEN, OF NEWARK, NEW JERSEY.

CARRIAGE O R MOVABLE BED FOR FORMING AND PLANING MACHINES.

Speeilication forming part of Letters APatent No. 36,884, dated November l1, 1862.

' culiar mannerof constructing movablebeds or carriages, on which wood or metal is placed to he shaped or otherwise operated upon, so that it can freely move in any direction with perfectease, and at the same time be perfectly solid and steady.

In the drawings, Figure l shows the bed or carriage in its position in a machine, with a gun-stock thereon, and the pattern by which the cavity for the lock is shaped, showing also the handle, with its leverage for moving the bed or carriage. Fig. 2 shows the jointings of the leverages within and under the face of the bed-plate or carriage.

The same letters refer to the same parts in each figure. p

The letter A designates the frame of the machine in which the carriage is used.

B shows a cross-beam, on which is fastened the perpendicular slide, C, upon which slide work in their respective bearings the two upright shafts D and E, the shaft D holding the guide-pin and the shaft E the cutting-tool, operated by the pulley X.

F indicates the pattern of a cavity for a lock, and G the corresponding cavity in the stock of a gun, which, with the pattern F, are held by convenient fastenings to the carriage J.

It is evident that to form the required irregular cavity, motion has to be given to the bed or carriage in a variety of directions; at the same time accuracy is required, so that one lock would fit alike in all the stocks operated upon by the machine, which makes steadiness and solidity of a bed or carriage indispensable. To accomplish this, the surfaces of the bedpiece of the machine and of the carriage are made true planes. The improved carriage is made hollow, but as heavy as requisite. Its weight, together with the jointed leverage, which is fast at H to the stationary bed of the machine and at I to the carriage, holds the carriage down solid and steady to its place.

K shows the lever-bars attached to the central parallel bar, L.

M shows the parallel leverage, which gives the workman the control of the motions of the carriage. The end W is jointed onto the stationary bed N and the end V to the moving l carriage J, the projections in the leverages to be such as the work to be done may require.

In the leverages formed as shown all lost motion is avoided by ordinary iittings on the joints, and by the levers thus arranged the guide-pin,when the shafts B and E are brought down to their work by pressure on the handle O, can be moved against the sides of the pattern with the utmost ease and facility, however irregular its shape, the revolving cutter on the shaft E of course forming an eX- act counterpart to the pattern in the wood 0r EDWIN ALLEN.

Vitnesses:

WM. M. GooDING, CHAs.. H. SKINNER. 

